Quoted from hawknole:
I had tons of white debris as well. Then I covered my spinning disc decal with 3M car bra vinyl, just cut myself a piece to fit. Amazon sells 6 inch wide pieces. The great thing about the vinyl is it has an almost rubbery feel so the ball still spins well and does not float like it would do on mylar.
Did you notice white flakes on or near the spinning disc? I don't see any flakes on the surface or accumulated near it. I like the suggestion of either blocking that ramp and seeing if the flakes appear without hitting the Tortuga ramp, or disabling the disc in the settings, if possible. I examined the disc surface before and it really looks like there is already a clear, vinyl or mylar cover in place. I was wondering if it could be something under the spinning disc, rubbing on the underside of it and grinding it down. I will try to isolate the spinning disc and see if I can definitely rule it in or out.
Thanks for all the ideas and help. I really appreciate it.